Screening for deep venous thrombosis in asymptomatic postoperative orthopedic patients using color Doppler sonography: analysis of prevalence and risk factors.

Objective: The purpose of our study was to assess the prevalence and risk factors for sonographically detectable lower extremity deep venous thrombosis (DVT) in asymptomatic patients following major orthopedic surgery.

Subjects And Methods: We performed color Doppler sonography of the lower extremities in 474 asymptomatic patients following major hip or knee surgery. We determined the prevalence of lower extremity DVT and used stepwise logistic regression to identify factors predictive of DVT.

Lymphoma and leukemia involving the testicles: findings on gray-scale and color Doppler sonography.

Objective: The purpose of this study was to determine the gray-scale and color Doppler sonographic appearance of testicular lymphoma and leukemia to aid in its differentiation from primary testicular neoplasms and inflammatory processes.

Materials And Methods: We retrospectively reviewed the testicular sonograms of eight male patients 5-74 years old (mean age, 43 years) with pathologically proved testicular leukemia or lymphoma. All patients presented with testicular enlargement.

Sequence and functional differences between Schmidt-Ruppin D and Schmidt-Ruppin A strains of pp60v-src.

We show that Schmidt-Ruppin D pp60v-src kinase activity is reduced by a mutation previously shown to be associated with Schmidt-Ruppin A pp60v-src temperature sensitivity and that its reduced transforming activity is associated with a conformational change in the SH3 region. The evolutionary relationship of seven v-src strains was studied by using parsimony analysis.

Gastric inhibitory polypeptide mechanisms of augmenting insulin secretion.

The cellular mechanisms whereby gastric inhibitory polypeptide (GIP) augments glucose-dependent insulin secretion remains poorly defined. Since glucose-dependent insulin secretion is modulated by membrane associated phospholipase A2 (PLA2) and intracellular lipoxygenase (LPX) and cyclooxygenase (CO) we hypothesize that GIP's augmentation of insulin secretion involves these enzyme systems. Neonatal rat pancreatic islet cell cultures were preincubated with 5.